One last question, the above route is a bit of a pricey upgrade path, but will be ok if I can hopefully sell a few of those parts off that I don't need to someone who will want to piece together a Di2 kit. What is the advantage of getting the new junction box, battery + charger over something like this homemade kit being sold on eBay?

I assume part of it is that you don't get the warranty from Shimano and knowing that it should be plug and play if you go the Shimano route. But this looks like a decent option plus comes with a better battery than Shimano gives you.

If you get the new junction A you also need two new wires from the L/R shifters to the new junction A.

If you get the new junction A you also need two new wires from the L/R shifters to the new junction A.

Awesome, thanks for answering that. I assume that is because the SM-EW67A-E had the wires designed into the junction box vs. the new SM-EW90 not having the wires built in?

For the length of the EW-SD50, are you guys using 300mm length for the shifters? Seems like that should be long enough, right?

pdlpsher1 wrote:

Junction A allows you to plug in the USB charger for charging the battery. It's more convenient than pulling the seatpost out.

So the seller of that eBay internal battery pack says:"This kit will charge the battery IN THE BIKE through one of the shifter ports, or you can buy a SM-JC41 junction box (not included, see photo 6) and charge by connecting to RD or FD cable."

"Charging instructions: To charge battery plug charger into bike before plugging the charger into AC outlet;

1 Plug charger into any open shift lever or junction port2 Light on charger will turn green3 Then plug charger into AC outlet light will turn red indicating charging4 Within 60-90 minutes charger light will turn green indicating full charge5 Unplug charger from AC outlet before unplugging from bike"

Awesome, thanks for answering that. I assume that is because the SM-EW67A-E had the wires designed into the junction box vs. the new SM-EW90 not having the wires built in?

Correct.

Ahillock wrote:

For the length of the EW-SD50, are you guys using 300mm length for the shifters? Seems like that should be long enough, right?

Correct. The wire connects to the inside of the shifters.

Ahillock wrote:

So the seller of that eBay internal battery pack says:"This kit will charge the battery IN THE BIKE through one of the shifter ports, or you can buy a SM-JC41 junction box (not included, see photo 6) and charge by connecting to RD or FD cable."

"Charging instructions: To charge battery plug charger into bike before plugging the charger into AC outlet;

1 Plug charger into any open shift lever or junction port2 Light on charger will turn green3 Then plug charger into AC outlet light will turn red indicating charging4 Within 60-90 minutes charger light will turn green indicating full charge5 Unplug charger from AC outlet before unplugging from bike"

Is that different than the one that comes with the SM-BTR2 battery? "The Shimano SM-BTR2 Di2 Battery is currently shipping with a seatpost assembly mounting hardware package,"

The black part that comes with the Shimano internal battery is a shim. The diameter of the shim is way too small to be useful for anything. You will have to get the Ritchey Logic battery holder.

Lastly, you will need a wire long enough to go from the internal battery to junction B. The Cannondale will have a wire from junction B to the external battery. However it might be too short for the Shimano seatpost battery. The internal battery doesn't come with a cable.

The black part that comes with the Shimano internal battery is a shim. The diameter of the shim is way too small to be useful for anything. You will have to get the Ritchey Logic battery holder.

Lastly, you will need a wire long enough to go from the internal battery to junction B. The Cannondale will have a wire from junction B to the external battery. However it might be too short for the Shimano seatpost battery. The internal battery doesn't come with a cable.

Thanks. I believe I will go that Ritchey route. Seems like the perfect setup and is a decent price as well.

Yeah I will get a cable long enough to get from the end of the seatpost down to the junction box B.

The black part that comes with the Shimano internal battery is a shim. The diameter of the shim is way too small to be useful for anything. You will have to get the Ritchey Logic battery holder.

Lastly, you will need a wire long enough to go from the internal battery to junction B. The Cannondale will have a wire from junction B to the external battery. However it might be too short for the Shimano seatpost battery. The internal battery doesn't come with a cable.

Thanks. I believe I will go that Ritchey route. Seems like the perfect setup and is a decent price as well.

Yeah I will get a cable long enough to get from the end of the seatpost down to the junction box B.

The link that I provided is the SM-BCR2 and this is the one you need. I have the same part and I purchased it via the same vendor. I don't know anything about firmware updates. Since one end of the charger is a USB connector I assume it can be connected to a PC.

The link you provided is the battery charger for the external battery only. I hope this helps.

The link you provided is the battery charger for the external battery only. I hope this helps.

I might be a little dense, but it says it is for the Shimano E-Tube SM-BCR2 battery. That is probably why I got confused. But I will take your advice and order the part you linked to. Did you just get the charging cord off of eBay?

The link you provided is the battery charger for the external battery only. I hope this helps.

I might be a little dense, but it says it is for the Shimano E-Tube SM-BCR2 battery. That is probably why I got confused. But I will take your advice and order the part you linked to. Did you just get the charging cord off of eBay?

The picture doesn't show the USB cord however the charger does come with one.

I wonder how long Shimano is away from making E-Tube Project OSX compatible.

From an old article I remember reading:

Quote:

The new 9070 Di2 also adds Multi-Shift Function and E-Tube Project Software. It’s free and a PC connector is included with the system. You’ll get a username and password that lets you download the software, but you’ll need the connector to do anything with it. At launch it’ll be PC only, but they’re working on a Mac version. Lawrence says their field techs use Macs running Parallels and it works fine. With it, you can program the shifter to cycle through multiple gears when holding down the shifter, even letting you set how quickly it shifts between gears when holding it down. Out of the box, it’ll be set stock to perform one shift per click.

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